CN107524645A - A kind of independent loops filter temperature control water cooling hydraulic system - Google Patents
A kind of independent loops filter temperature control water cooling hydraulic system Download PDFInfo
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- CN107524645A CN107524645A CN201710813259.1A CN201710813259A CN107524645A CN 107524645 A CN107524645 A CN 107524645A CN 201710813259 A CN201710813259 A CN 201710813259A CN 107524645 A CN107524645 A CN 107524645A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of independent loops filter temperature control water cooling hydraulic system, hydraulic pump is connected by oil absorption filter with fuel tank, the oil outlet end of hydraulic pump is passed through in fuel tank by sequence valve and return filter all the way, the both ends of return filter are parallel with the obstructed individual event valve of normality, the oil outlet end of hydraulic pump its be passed through all the way by choke valve and temperature-sensitive overflow valve in fuel tank, the oil outlet end of hydraulic pump passes through two-way electromagnetic valve all the way, it is passed through after counterbalance valve and water cooler in return filter, the oil outlet end of hydraulic pump is connected with a Two In and One Out formula three-way magnetic valve all the way, and hydraulic pump is connected with one of entrance of the three-way magnetic valve, the oil outlet end of choke valve and another entrance of three-way magnetic valve connect, the outlet of Two In and One Out formula three-way magnetic valve is with controlling the hydraulic control ratio water valve of water cooler to be connected.When being worked the invention enables petroleum coke conveyer under extremely cold environment, environment temperature is low, it is necessary to which hydraulic oil is heated into its preference temperature to ensure system reliably working.
Description
Technical field
The present invention relates to petroleum refining industry Delayed Coking Technology field, and temperature control is filtered more particularly, to a kind of independent loops
Water-cooled hydraulic system.
Background technology
Delayed coking is a kind of Petroleum Processing Technology, and using mink cell focus as raw material, pyrogenetic reaction is carried out in coke drum, generation
Coke close-burning in tower.The upper and lower cover of coke drum is opened, coke is smashed using hydraulic decoking method and discharged from Xia Takou,
Coke drum upper and lower cover is closed, enters back into next step production cycle.
The coke and water discharged at present are flowed into burnt pond and are dehydrated, and are carried out batch turning to the coke in pond by grab bucket crane, are grabbed
Go out, into next procedure processing or directly entrucking outward transport.The outdoor open setting in burnt pond, it is burnt in batch turning and catching transport process
The dust and the peculiar smell of volatile matter that charcoal scatters, kicks up pollute to surrounding enviroment.
The pollution sources to be eliminated, it is necessary to unlimited operating condition closed processes.All working mechanism during closed
All it is to be driven by hydraulic system, it is ensured that hydraulic system can be long-term under the unfavorable conditions such as areal variation, harsh environments
Reliable work；Make hydraulic working oil within the scope of suitable temperature and ensure that the cleannes of fluid are crucial.
The content of the invention
The purpose of the present invention is to solve during defeated Jiao of petroleum coke conveyer, in working environment difference and territorial environment temperature
Under the rough sledding such as poor big, how to ensure Hydraulic system cleanliness, rationally control hydraulic oil temperature simultaneously effectively to save, it is ensured that hydraulic pressure system
The problem of functional reliability of uniting, there is provided a kind of independent loops filter temperature control water cooling hydraulic system.
To solve the deficiency of above-mentioned technical problem, used technical scheme is the present invention：
A kind of independent loops filter temperature control water cooling hydraulic system, including motor, hydraulic pump and oil absorption filter, hydraulic pump pass through
Oil absorption filter is connected with fuel tank, and motor driving hydraulic pump works, the oil outlet end of hydraulic pump wherein passes sequentially through order all the way
Valve and return filter are passed through in fuel tank, and the both ends of return filter are parallel with the obstructed individual event valve of normality, hydraulic pump it is fuel-displaced
End wherein passes sequentially through choke valve all the way and temperature-sensitive overflow valve is passed through in fuel tank in order to automatic detection oil temperature and according to oil temperature certainly
Dynamic direct proportion regulation temperature-sensitive overflow valve inlet pressure, the oil outlet end of hydraulic pump wherein pass sequentially through two-way electromagnetic valve, the back of the body all the way
It is passed through after pressure valve and water cooler in return filter, the oil outlet end of hydraulic pump is wherein connected with a Two In and One Out formula threeway all the way
Magnetic valve, and hydraulic pump is connected with one of entrance of the Two In and One Out formula three-way magnetic valve, the oil outlet end of choke valve and two
Enter another an entrance connection for outing formula three-way magnetic valve, hydraulic control ratio is connected with the outlet of Two In and One Out formula three-way magnetic valve
Water valve, hydraulic control ratio water valve is connected with water cooler is passed through the amount of cooling water to control in water cooler, pass through Two In and One Out formula
The opening degree of the adjustment of oil pressure hydraulic control ratio water valve of the hydraulic oil flowed out in three-way magnetic valve, because Two In and One Out formula three is powered
The oil pressure of the hydraulic oil flowed out in magnet valve is identical with the oil pressure of temperature-sensitive overflow valve inlet, therefore adjusts oil pressure by temperature-sensitive overflow valve
Cooling water inflow is realized to automatically adjust by hydraulic oil temperature direct proportion.
In cooling work pattern on demand, motor driving hydraulic pump leads to successively after being pumped by oil absorption filter out of fuel tank
Cross two-way electromagnetic valve, counterbalance valve, water cooler and return filter and be passed through fuel tank formation loop, the oil outlet end of hydraulic pump leads to successively
Cross after choke valve and three-way magnetic valve and be passed through hydraulic control ratio water valve, the oil outlet end of choke valve be also connected with temperature-sensitive overflow valve in order to
The oil pressure of temperature-sensitive overflow valve arrival end is adjusted by detecting oil temperature, when temperature-sensitive overflow valve detects the temperature of hydraulic oil less than minimum
During design temperature, adjustment temperature-sensitive overflow valve arrival end oil pressure is minimum, and hydraulic oil is passed through hydraulic control ratio water valve by three-way magnetic valve
In oil pressure be not enough to drive hydraulic control ratio water valve to open, therefore no-cooling-water is flowed into water cooler, to avoid water cooler
Cooling hydraulic oil makes oil temperature less than the lower limit of preference temperature, when temperature-sensitive overflow valve detects that the temperature of hydraulic oil is set higher than highest
When constant temperature is spent, its inlet pressure highest is adjusted, the oil pressure that hydraulic oil is passed through in hydraulic control ratio water valve by three-way magnetic valve reaches
To maximum drive hydraulic control ratio water valve standard-sized sheet, cooling water is passed through with maximum stream flow in water cooler, so that hydraulic oil is quick
Cooling, to ensure that hydraulic oil is no more than the upper limit of its preference temperature.
When being worked under extremely cold environment, the energization of described two-way electromagnetic valve is in the closed position, the hydraulic pressure of hydraulic pump output
Oil stream is less than the minimum setting value of temperature-sensitive overflow valve, its import oil pressure is very low, is not enough to sequence valve and choke valve because temperature is relatively low
Driving hydraulic control ratio water valve and make its closing, no-cooling-water flows into water cooler, and micro hydraulic oil is only provided after throttle valve adjustment,
Remaining whole fluid flows back to fuel tank through sequence valve, check valve and return filter, flows through pressure caused by sequence valve and check valve
Loss makes fluid generate heat, and heating hydraulic oil plays pre- heat effect.
When being worked under extreme thermal environment, two-way electromagnetic valve power-off conducting and three-way magnetic valve energization make hydraulic oil pump directly logical
Cross three-way magnetic valve and hydraulic control ratio water valve connects, the hydraulic fluid pressure driving hydraulic control ratio being now passed through in hydraulic control ratio water valve
Water valve standard-sized sheet cooling water supply, makes hydraulic oil fast cooling, plays precooling effect.
The beneficial effects of the invention are as follows：1st, when petroleum coke conveyer works under extremely cold environment, environment temperature is low, it is necessary to will
Hydraulic oil is heated to its preference temperature to ensure system reliably working；
2nd, when petroleum coke conveyer works under extreme thermal environment, environment temperature height is, it is necessary to hydraulic oil be pre-cooled to ensure it
Be maintained at Suitable ranges and can long time continuous working；
3rd, when petroleum coke conveyer works under non-extreme environment, the pattern cooled down on demand can be selected, reduce energy consumption, effectively energy-conservation
Emission reduction；
4th, pre-cooling and can effectively filter hydraulic oil under refrigerating mode on demand, removing objectionable impurities and ensure its cleaning, protect
Card can reliably working under extreme difference environment.
5th, reasonable selection heating, it can pre-cool and cool down on demand in Three models according to environmental condition and applying working condition
One or more.
6th, hydraulic oil is cooled down using the water cooled but device heat exchange of delayed coking cooling circulating water, hydro-thermal capacity is big, and postpones
The change of coking cooling temperature of circulating water is small, therefore the system is influenced by ambient temperature small, and radiating efficiency is high.
7th, element selected by system is hydraulic universal element, and cost is low, cost-effective.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Diagram mark：1st, individual event valve；2nd, return filter；3rd, motor；4th, hydraulic pump；5th, sequence valve；6th, water cooling
Device；7th, hydraulic control ratio water valve；8th, counterbalance valve；9th, two-way electromagnetic valve；10th, three-way magnetic valve；11st, choke valve；12nd, temperature-sensitive overflow
Valve；13rd, oil absorption filter.
Embodiment
Shown in Fig. 1, embodiment is as follows：
A kind of independent loops filter temperature control water cooling hydraulic system, including motor 3, hydraulic pump 4 and oil absorption filter 13, hydraulic pump
4 are connected by oil absorption filter 13 with fuel tank, and motor 3 drives hydraulic pump 4 to work, the oil outlet end of hydraulic pump 4 wherein all the way according to
Secondary to be passed through by sequence valve 5 and return filter 2 in fuel tank, the both ends of return filter 2 are parallel with the obstructed individual event valve of normality
1, the oil outlet end of hydraulic pump 4 wherein passes sequentially through choke valve 11 all the way and temperature-sensitive overflow valve 12 is passed through in fuel tank in order to examine automatically
Survey oil temperature and the inlet pressure of temperature-sensitive overflow valve 12 is adjusted according to the automatic direct proportion of oil temperature, the oil outlet end of hydraulic pump 4 is wherein all the way
It is passed through after passing sequentially through two-way electromagnetic valve 9, counterbalance valve 8 and water cooler 6 in return filter 2, the oil outlet end of hydraulic pump 4 is wherein
A Two In and One Out formula three-way magnetic valve 10 is connected with all the way, and hydraulic pump 4 and the Two In and One Out formula three-way magnetic valve 10 are wherein
One entrance connection, the oil outlet end of choke valve 11 are connected with another entrance of Two In and One Out formula three-way magnetic valve 10, and two enter one
Go out in the outlet of formula three-way magnetic valve 10 to be connected with hydraulic control ratio water valve 7, hydraulic control ratio water valve 7 is connected with water cooler 6 to control
The amount of cooling water is passed through in water cooler 6 processed, is adjusted by the oil pressure of the hydraulic oil flowed out in Two In and One Out formula three-way magnetic valve 10
The opening degree of whole hydraulic control ratio water valve 7, due to the oil pressure of hydraulic oil and the heat that are flowed out in Two In and One Out formula three-way magnetic valve 10
The oil pressure of the quick entrance of overflow valve 12 is identical, therefore realizes cooling water inflow by hydraulic oil temperature by the adjustment oil pressure of temperature-sensitive overflow valve 12
Direct proportion automatically adjusts.
In cooling work pattern on demand, motor 3 drive hydraulic pump 4 pumped by oil absorption filter 13 out of fuel tank after according to
It is secondary by two-way electromagnetic valve 9, counterbalance valve 8, water cooler 6 and return filter 2 be passed through fuel tank formed loop, hydraulic pump it is fuel-displaced
End 4 is passed through hydraulic control ratio water valve 7 after passing sequentially through choke valve 11 and three-way magnetic valve 10, and the oil outlet end of choke valve also overflows with temperature-sensitive
Stream valve 12 is connected in order to adjust the oil pressure of the arrival end of temperature-sensitive overflow valve 12 by detecting oil temperature, in temperature-sensitive overflow valve design temperature
In boundary, temperature-sensitive overflow valve adjusts its inlet pressure according to the automatic direct proportion of oil temperature, until peak (same to charge oil pressure), and
Hydraulic control ratio water valve 7 by its enter oil pressure (entering oil pressure with temperature-sensitive overflow valve) direct proportion regulation into water cooler 6 cooling water inflow,
So that cooling water inflow is automatically adjusted by hydraulic oil temperature direct proportion；When temperature-sensitive overflow valve 12 detects the temperature of hydraulic oil less than most
During low design temperature, adjustment temperature-sensitive 12 arrival end oil pressure of overflow valve are minimum, and hydraulic oil is passed through hydraulic control ratio by three-way magnetic valve 10
Oil pressure in example water valve 7 is not enough to drive hydraulic control ratio water valve 7 to open, therefore no-cooling-water is flowed into water cooler 6, to avoid
Water cooler 6 cools down the lower limit that hydraulic oil makes oil temperature be less than preference temperature, when temperature-sensitive overflow valve 12 detects the temperature of hydraulic oil
During higher than highest setting temperature, its inlet pressure highest is adjusted, hydraulic oil is passed through hydraulic control ratio water by three-way magnetic valve 10
Oil pressure in valve 7 reaches the standard-sized sheet of maximum drive hydraulic control ratio water valve 7, and cooling water is passed through with maximum stream flow in water cooler 6, from
And make hydraulic oil fast cooling, to ensure that hydraulic oil is no more than the upper limit of its preference temperature.
When being worked under extremely cold environment, described two-way electromagnetic valve 9 is powered in the closed position, the liquid that hydraulic pump 4 exports
Force feed flows to sequence valve 5 and choke valve 11, is less than 12 minimum setting value of temperature-sensitive overflow valve because temperature is relatively low, its import oil pressure is very
It is low, it is not enough to drive hydraulic control ratio water valve 7 and make its closing, no-cooling-water flows into water cooler 6, and choke valve 11 only carries after adjusting
For micro hydraulic oil, remaining whole fluid flows back to fuel tank through sequence valve 5, check valve 1 and return filter 2, flows through the He of sequence valve 5
The pressure loss caused by check valve 1 makes fluid generate heat, and heating hydraulic oil plays pre- heat effect.
When being worked under extreme thermal environment, the power-off of two-way electromagnetic valve 9 conducting and the energization of three-way magnetic valve 10 make hydraulic oil pump straight
Connected three-way magnetic valve 10 to be connected with hydraulic control ratio water valve 7, the hydraulic fluid pressure driving being now passed through in hydraulic control ratio water valve 7
The standard-sized sheet cooling water supply of hydraulic control ratio water valve 7, makes hydraulic oil fast cooling, plays precooling effect.
Technical scheme and embodiment cited by the present invention and non-limiting, with the technical scheme cited by the present invention and
Embodiment is equivalent or effect same approach is all in the range of the present invention protects.
Claims (4)
1. a kind of independent loops filter temperature control water cooling hydraulic system, it is characterised in that：Including motor（3）, hydraulic pump（4）And suction
Oil strainer（13）, hydraulic pump（4）Pass through oil absorption filter（13）It is connected with fuel tank, motor（3）Drive hydraulic pump（4）Work
Make, hydraulic pump（4）Oil outlet end wherein pass sequentially through sequence valve all the way（5）And return filter（2）It is passed through in fuel tank, oil return
Filter（2）Both ends be parallel with the obstructed individual event valve of normality（1）, hydraulic pump（4）Oil outlet end wherein pass sequentially through throttling all the way
Valve（11）With temperature-sensitive overflow valve（12）It is passed through in fuel tank in order to automatic detection oil temperature and heat is adjusted according to the automatic direct proportion of oil temperature
Quick overflow valve（12）Inlet pressure, hydraulic pump（4）Oil outlet end wherein pass sequentially through two-way electromagnetic valve all the way（9）, counterbalance valve
（8）And water cooler（6）After be passed through return filter（2）In, hydraulic pump（4）Oil outlet end be wherein connected with one or two all the way and enter one
Go out formula three-way magnetic valve（10）, and hydraulic pump（4）With the Two In and One Out formula three-way magnetic valve（10）One of entrance connection,
Choke valve（11）Oil outlet end and Two In and One Out formula three-way magnetic valve（10）The connection of another entrance, Two In and One Out formula three is powered
Magnet valve（10）Outlet on be connected with hydraulic control ratio water valve（7）, hydraulic control ratio water valve（7）With water cooler（6）Connect to control
Water cooler（6）In be passed through the amount of cooling water, pass through Two In and One Out formula three-way magnetic valve（10）The oil pressure of the hydraulic oil of middle outflow
Adjust hydraulic control ratio water valve（7）Opening degree, due to Two In and One Out formula three-way magnetic valve（10）The oil of the hydraulic oil of middle outflow
Pressure and temperature-sensitive overflow valve（12）The oil pressure of entrance is identical, therefore passes through temperature-sensitive overflow valve（12）Adjustment oil pressure realizes cooling water inflow
Automatically adjusted by hydraulic oil temperature direct proportion.
A kind of 2. independent loops filtering temperature control water cooling hydraulic system according to claim 1, it is characterised in that：Cold on demand
But mode of operation, motor（3）Drive hydraulic pump（4）Pass through oil absorption filter（13）Two-way is passed sequentially through after being pumped out of fuel tank
Magnetic valve（9）, counterbalance valve（8）, water cooler（6）And return filter（2）It is passed through fuel tank and forms loop, the oil outlet end of hydraulic pump
（4）Pass sequentially through choke valve（11）And three-way magnetic valve（10）After be passed through hydraulic control ratio water valve（7）, the oil outlet end of choke valve also with
Temperature-sensitive overflow valve（12）Connection is in order to by detecting oil temperature adjustment temperature-sensitive overflow valve（12）The oil pressure of arrival end, when temperature-sensitive overflow
Valve（12）When detecting that the temperature of hydraulic oil is less than lowest set temperature, temperature-sensitive overflow valve is adjusted（12）Arrival end oil pressure is minimum,
Hydraulic oil passes through three-way magnetic valve（10）It is passed through hydraulic control ratio water valve（7）In oil pressure be not enough to drive hydraulic control ratio water valve（7）
Open, therefore no-cooling-water flows into water cooler（6）In, to avoid water cooler（6）Cooling hydraulic oil makes oil temperature less than suitable
The lower limit of temperature, when temperature-sensitive overflow valve（12）When detecting that the temperature of hydraulic oil is higher than highest setting temperature, its oil inlet is adjusted
Pressure highest, hydraulic oil pass through three-way magnetic valve（10）It is passed through hydraulic control ratio water valve（7）In oil pressure reach maximum drive hydraulic control
Ratio water valve（7）Standard-sized sheet, water cooler（6）In cooling water is passed through with maximum stream flow so that hydraulic oil fast cooling, with true
Protect the upper limit that hydraulic oil is no more than its preference temperature.
A kind of 3. independent loops filtering temperature control water cooling hydraulic system according to claim 1, it is characterised in that：In extremely cold ring
When being worked under border, described two-way electromagnetic valve（9）It is powered in the closed position, hydraulic pump（4）The hydraulic oil flow direction order of output
Valve（5）And choke valve（11）, it is less than temperature-sensitive overflow valve because temperature is relatively low（12）Minimum setting value, its import oil pressure is very low, deficiency
To drive hydraulic control ratio water valve（7）And making its closing, no-cooling-water flows into water cooler（6）, choke valve（11）Only carried after regulation
For micro hydraulic oil, remaining whole fluid is through sequence valve（5）, check valve（1）And return filter（2）Fuel tank is flowed back to, is flowed through suitable
Sequence valve（5）And check valve（1）The caused pressure loss makes fluid generate heat, and heating hydraulic oil plays pre- heat effect.
A kind of 4. independent loops filtering temperature control water cooling hydraulic system according to claim 1, it is characterised in that：In very hot ring
When being worked under border, two-way electromagnetic valve（9）Power-off conducting and three-way magnetic valve（10）Energization makes hydraulic oil pump be directly powered by three
Magnet valve（10）With hydraulic control ratio water valve（7）Connection, is now passed through hydraulic control ratio water valve（7）In hydraulic fluid pressure driving hydraulic control ratio
Example water valve（7）Standard-sized sheet cooling water supply, make hydraulic oil fast cooling, play precooling effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813259.1A CN107524645B (en) | 2017-09-11 | 2017-09-11 | Independent circulating filtering temperature control water cooling hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710813259.1A CN107524645B (en) | 2017-09-11 | 2017-09-11 | Independent circulating filtering temperature control water cooling hydraulic system |
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| Publication Number | Publication Date |
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| CN107524645A true CN107524645A (en) | 2017-12-29 |
| CN107524645B CN107524645B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710813259.1A Active CN107524645B (en) | 2017-09-11 | 2017-09-11 | Independent circulating filtering temperature control water cooling hydraulic system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798283A (en) * | 2019-01-21 | 2019-05-24 | 江苏大学 | One kind remotely controlling more relay protective scheme function central pumping stations |
| CN110873093A (en) * | 2019-11-21 | 2020-03-10 | 杰瑞石油天然气工程有限公司 | Integral hydraulic pressure station |
| CN114909366A (en) * | 2022-05-27 | 2022-08-16 | 中国人民解放军92228部队 | Temperature control hydraulic circuit and temperature circulation control method |
| CN116104674A (en) * | 2023-02-28 | 2023-05-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
| CN117067124A (en) * | 2023-10-13 | 2023-11-17 | 歌玛磨具南通有限公司 | Self-cooling grinding wheel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798283A (en) * | 2019-01-21 | 2019-05-24 | 江苏大学 | One kind remotely controlling more relay protective scheme function central pumping stations |
| CN110873093A (en) * | 2019-11-21 | 2020-03-10 | 杰瑞石油天然气工程有限公司 | Integral hydraulic pressure station |
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| CN114909366B (en) * | 2022-05-27 | 2024-07-19 | 中国人民解放军92228部队 | Temperature control hydraulic circuit and temperature circulation control method |
| CN116104674A (en) * | 2023-02-28 | 2023-05-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
| CN116104674B (en) * | 2023-02-28 | 2024-01-12 | 中国长江电力股份有限公司 | Integrated device and method for supplementing, detecting and filtering oil of hydroelectric generating set |
| CN117067124A (en) * | 2023-10-13 | 2023-11-17 | 歌玛磨具南通有限公司 | Self-cooling grinding wheel |
| CN117067124B (en) * | 2023-10-13 | 2023-12-26 | 歌玛磨具南通有限公司 | Self-cooling grinding wheel |
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